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<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
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<body>

  <div id="app">
    <ul>
      <li>第一段示例内容：{{ 10 + 20 + 30 }}</li>
      <li>第二段示例内容：{{ 22 > 3 ? '22比3大' : '3比22大' }}</li>
      <!-- <li id="{{ 1 + 2 }}"></li> -->
      <!-- <li>{{ var num = 100; }}</li> -->
    </ul>
  </div>

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  <script>
    new Vue({
      el: '#app'
    });
  </script>
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